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MongoDB Manipulate, Aggregation

I have a project using mongodb as database. and there are 3 collections mainly in the db, stations, inverters, inverter_logs. there is relationship between inverter to station, inverter_log to inverter.

the schema of each inverter_log document is something like the following link

[url removed, login to view]

what i need is, i need to query for history data (station or inverter), (aggregation or whatever workable solution)

1. station history use the given parameters (station objectid, date from, date to, interval), if interval is day, then the result should be sum of the each inverter_log of related inverter of each day from dateFrom to dateTo. and if the interval is month, should be the last inverter_log of each inverter of the station, and sum of them.

2. inverter history is obvious easier, it working now. but i wanna make the interval as above.

feel free to contact me, pay immediately if the result of query working fine.

you can take a glance of current db by uri: ds019628.mlab.com, port: 19628, username: test, password: test

Квалификация: node.js, NoSQL Couch & Mongo, Архитектура ПО

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О работодателе:
( 3 отзыв(-а, -ов) ) Taipei, Taiwan

ID проекта: #11185346

Поручен:

VlaPo

Hi, My name is Vladimir and I am nodejs developer over 3 years. I am using MEAN stack 2 years and work with MongoDB over 3 years. I have the basic certification of MongoDB developer. I would like help you with your p Больше

$30 USD за 1 день
(2 отзывов(-а))
1.9

7 фрилансеров(-а) в среднем готовы выполнить эту работу за $44

shafayat1039

Hi, I am Shafayat, I am an M.E.A.N. stack developer. I believe I am one of the best candidates for this job. If you have a minute , I would request you to send me a message so we can discuss further specifications Больше

$66 USD за 1 день
(3 отзывов(-а))
3.9
DemonDeveloper

We are team of excellent developers. We have 2 year experience related to your project field. We can do your project and solve your all problems according to your requirements. We have read your description for project Больше

$30 USD за 1 день
(6 отзывов(-а))
2.8
chandankhatri1

Hi, I am a MongodB certified developer and would like to propose my services for this task. Thanks, Chandan

$100 USD за 2 дней(-я)
(2 отзывов(-а))
2.7
gruyuri

Hi. The project is very interesting for me. Looking forward for the details of your requirements. I have strong knowledge both in development and administration on MongoDB system.

$30 USD за 1 день
(0 отзывов(-а))
0.0
omnishiva

I have good knowledge of writing complex queries

$30 USD за 1 день
(0 отзывов(-а))
0.0
$25 USD за 1 день
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0.0